OEM CDI and Coil for Vespa ET2 for US Market. With Ground Wire. Fits ET2, and other Piaggio 2 Stroke models with ZAPC16 engine. There are two different CDI Coils used in Piaggio 50cc 2 Stroke Scooters. This one has the ground wire. The other one doesn't. If yours does, order this one. Replaces part numbers 252537 292194